ncols         5
nrows         5
xllcorner     100.0
yllcorner     100.0
cellsize      10.0
NODATA_value  -9999
0 1 1 1 1 
0 0 0 0 0 
0 0 0 1 0.4 
0 0 0 0.6 0.6 
0 0 0 0.4 1 
